[INFO] cloning repository https://github.com/mriise/play-wt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mriise/play-wt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmriise%2Fplay-wt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmriise%2Fplay-wt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dbf815a34c04ddd5e57e9f173a8657078af26093
[INFO] checking mriise/play-wt against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmriise%2Fplay-wt" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mriise/play-wt on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mriise/play-wt
[INFO] finished tweaking git repo https://github.com/mriise/play-wt
[INFO] tweaked toml for git repo https://github.com/mriise/play-wt written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mriise/play-wt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] e08cba307ce2e639546152345cf9799425ec600f1f47a8ef4972b438f24b590c
[INFO] running `Command { std: "docker" "start" "-a" "e08cba307ce2e639546152345cf9799425ec600f1f47a8ef4972b438f24b590c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e08cba307ce2e639546152345cf9799425ec600f1f47a8ef4972b438f24b590c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e08cba307ce2e639546152345cf9799425ec600f1f47a8ef4972b438f24b590c", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "f4b8dc1816a358a6f03a5dbdf6b1b8a597051d43742e17551816743f195b97f6", kill_on_drop: false }`
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[INFO] [stderr]     Checking play-wt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Weak`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |     net::{IpAddr, Ipv4Addr, SocketAddr},
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^
[INFO] [stdout] 6 |     path::{Path, PathBuf},
[INFO] [stdout] 7 |     sync::{Arc, Weak},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`, `self`
[INFO] [stdout]  --> src/files.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{self, Write},
[INFO] [stdout]   |          ^^^^  ^^^^^
[INFO] [stdout] 3 |     path::{self, Path},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ok` is imported redundantly
[INFO] [stdout]   --> src/files.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::result::Result::Ok;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Ok` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize_repr`, `Serialize_repr`
[INFO] [stdout]  --> src/messages.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_repr::{Deserialize_repr, Serialize_repr};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Weak`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |     net::{IpAddr, Ipv4Addr, SocketAddr},
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^
[INFO] [stdout] 6 |     path::{Path, PathBuf},
[INFO] [stdout] 7 |     sync::{Arc, Weak},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`, `self`
[INFO] [stdout]  --> src/files.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{self, Write},
[INFO] [stdout]   |          ^^^^  ^^^^^
[INFO] [stdout] 3 |     path::{self, Path},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ok` is imported redundantly
[INFO] [stdout]   --> src/files.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::result::Result::Ok;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Ok` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize_repr`, `Serialize_repr`
[INFO] [stdout]  --> src/messages.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_repr::{Deserialize_repr, Serialize_repr};
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.21s
[INFO] running `Command { std: "docker" "inspect" "f4b8dc1816a358a6f03a5dbdf6b1b8a597051d43742e17551816743f195b97f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b8dc1816a358a6f03a5dbdf6b1b8a597051d43742e17551816743f195b97f6", kill_on_drop: false }`
[INFO] [stdout] f4b8dc1816a358a6f03a5dbdf6b1b8a597051d43742e17551816743f195b97f6